How do you connect an Arduino to a touch? A touch (or touch panel) normally also includes a display. The display should also be controlled by the Arduino.
There are several technologies for touch panels. The most common are resistive touch panels and capacitive (PCAP) touch.
Resistive touch panels require 2 analog inputs and digital outputs (push/pull) to be able to switch defined voltages. The Arduino offers both.
A touch in PCAP technology is usually already equipped with a touch panel controller. This usually has an I²C bus interface. This also fits perfectly with the Arduino.
A very elegant way is to use intelligent displays from the EA eDIP series and the EA uniTFT series. These have an SPI or I²C bus interface via which both the touch panel and the display are controlled. This reduces the hardware and software effort to a minimum.
You can buy touch panels and displays here.

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